Connect 5V to the USB port or 3.7V to the battery pads. The blue LED will start flashing.
Searching for a free datasheet can be frustrating. Many aggregation sites lock PDFs behind paywalls or require you to fill out lengthy corporate forms. Here is the fastest, legitimate method to get the .
Bluetooth mode active, searching for a device to pair. Solid Blue: Bluetooth device successfully connected. Flashing Blue (Slow): Audio is actively playing. 4. Hardware Connection Configurations Configuration A: Plug-and-Play (Easiest)
Keep the module housed inside plastic, wood, or acrylic enclosures. If a metal housing is mandatory, ensure the antenna section of the PCB projects out of the enclosure. vhm 314 datasheet free
The results were the usual graveyard of broken links: obsolete forum pages, Russian schematic dumps, and a defunct electronics supplier’s catalog from 2007. The VHM 314 was a ghost. A legendary, impossibly precise analog-to-digital converter chip from the late 80s, used in a single, now-mythical piece of Soviet test equipment. Finding its datasheet was a rite of passage for hardware archaeologists.
Go to product viewer dialog for this item. is a popular, ultra-compact Bluetooth audio receiver module frequently used in DIY speaker projects. It comes in several versions, with newer "Blackboard" models typically featuring Bluetooth 5.0 and Type-C or Micro-USB power inputs. Technical Specifications Specification 5.0 (supports 4.1/4.2) Operating Voltage 3.7V to 5V DC Signal-to-Noise Ratio (SNR) THD + Noise ≤0.1% or −70 dB Frequency Response 20Hz – 20kHz Transmission Distance Up to 15m (open space) Audio Decoding MP3, WAV, FLAC, APE (Lossless) Power Consumption ~20mA (active), Interface and Features
Ensure your power source can reliably deliver at least 200mA of continuous current. Connect 5V to the USB port or 3
While the search for a "VHM 314 datasheet free" may not lead to a single, official PDF, the information is readily available if you know where to look. This guide has collected all the vital technical data, practical insights, and project ideas you'll need to make the most of this excellent little module.
Located adjacent to the USB port, these allow for direct wiring of a 3.7V lithium-polymer (LiPo) battery for portable applications.
The VHM-314 is favored for its simplicity and decent performance. While different versions of the module exist, the following are the most consistently reported technical specifications: Many aggregation sites lock PDFs behind paywalls or
Open the Bluetooth settings on your smartphone, tablet, or computer. Scan for new devices and select from the list.
The is a low-cost, high-performance Bluetooth audio receiver board. It is widely used in DIY audio projects, speaker conversions, and car audio upgrades.